Fwd: [stan-users] Model optimization leads to "stuck" chain

[Ben Goodrich]

This one looks okay now from rstan as of commit 0cde41e.

Ben

On Sunday, October 14, 2012 5:40:15 PM UTC-4, Ben Goodrich wrote:

On Sunday, October 14, 2012 4:48:29 PM UTC-4, Bob Carpenter wrote:

Please let us know if you run into reproducible numerical
stability issues.  We could definitely use better limiting
behavior in many cases.

If you source("stability.txt") in R, a handful of chains per 100 should exhibit these problems.

Ben

[Bob Carpenter]

On 10/18/12 12:27 AM, Ben Goodrich wrote:
> This one looks okay now from rstan as of commit 0cde41e.

Great news.

Was there a specific patch that fixed it?

I'm still trying to understand where the posterior
geometry, floating point issues, and our own built-in
boundary conditions individually or separately send
things off the rails.

- Bob

[Ben Goodrich]

On Thursday, October 18, 2012 1:14:36 AM UTC-4, Bob Carpenter wrote:

On 10/18/12 12:27 AM, Ben Goodrich wrote:
> This one looks okay now from rstan as of commit 0cde41e.

Great news.

Was there a specific patch that fixed it?

Probably 35c723fb23794f319f1eeff446d90d27a5370899

Ben